AudioFu Chart · November 2026
Best Filter Modules Under $1,000 2026
The top pick is Doepfer A-124 VCF5 Wasp Filter ($98). Behringer 904B Voltage Controlled High Pass Filter Eurorack… gives you the most for the money at $31. Verbos Electronics Dual Four Pole leads the high end. Ranked by the AudioFu Index from 86 models across 28 brands, prices checked every night.
Last updated: November 1, 2026
Top 10
Full detail for the 10 highest AudioFu Index scores. Every other model is listed below.
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The Doepfer A-124 Wasp Filter is a quirky, characterful module that delivers a distinct, gritty sound. It's a fantastic choice for sound designers and experimental musicians looking to add a touch of vintage edge and controlled chaos to their patches—it’s not a substitute for a clean, surgical filter, but a flavorful accent.
Pros
- Unique, aggressive filter character inspired by the Waspin synth
- Provides distinct distortion and 'dirty' sonic textures
- Offers bandpass and combined low/notch/highpass outputs for versatility
Cons
- Limited resonance control compared to more modern filter designs
- Can be noisy if gain staging isn't carefully managed
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Doepfer A-106-5 12dB SEM Type Voltage Controlled Filter
A-106-5 SEM Filter · Doepfer
9 for sale on Reverb2 finishes at Thomann
This A-106-5 SEM filter is a fantastic recreation of a classic voice – it’s a genuine slice of vintage synth goodness in a tiny package. Perfect for those wanting that warm, resonant SEM sound without the expense of a full vintage module, and it slots neatly into any Eurorack system.
Pros
- Classic SEM filter character, instantly recognizable and warm
- Excellent build quality typical of Doepfer's meticulous engineering
- Compact 8HP footprint, ideal for dense modular setups
Cons
- Limited filter modes compared to more modern, complex filters
- Power draw might be significant for smaller power supplies
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Xaoc Devices Belgrad Dual Peak State Variable Filter
Belgrad · XAOC Devices
18 for sale on Reverb1 finish at Thomann
The Belgrad is a powerhouse of a filter module – it’s seriously versatile. It’s ideal for sound designers and experimental musicians who want a wide palette of filter sounds, from subtle movement to chaotic, screaming textures. The non-linear feedback adds a real edge and makes it a real characterful module.
Pros
- Exceptional filter character, blending warmth and aggressive resonance.
- Unique filter modes offer incredible sonic versatility.
- Robust build quality with a reassuringly solid feel.
Cons
- Power consumption is relatively high for a single module.
- Steeper learning curve for mastering all filter modes.
72AudioFu
IndexStableno change since Aug 17Aug 17$363 now$363€325 at Thomann · in stockCheck price ↗ -
The Pico VCF1 is a fantastic little module for anyone wanting that classic, gritty Polivoks filter sound without the bulk. It's a real workhorse for experimental sound design and adding some edge to your modular patching, especially if you're into darker, industrial textures.
Pros
- Authentic Polivoks filter character, surprisingly powerful for its size
- Russian NOS op-amps deliver a unique, vintage-flavored tone
- Self-oscillation is clean and usable for wild sound design
Cons
- Limited filter modes compared to full-sized counterparts
- Power draw is a bit higher than some other Pico modules
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This Dual Four Pole is a beautifully voiced filter module, perfect for sound designers and experimental musicians seeking a refined, analog character. It’s a serious upgrade for those wanting to sculpt complex textures and evolving soundscapes – not so much a screaming, aggressive filter, but a truly musical one.
Pros
- Exceptional discrete filter design delivers a warm, organic tone.
- Normalisation provides a seamless, resonant high-to-low-pass transition.
- Well-built with robust construction and quality components – feels solid.
Cons
- 21 TE width can be restrictive in smaller Eurorack cases.
- Limited resonance range; lacks aggressive self-oscillation for extreme sounds.
69AudioFu
Index↓ 15.1%since Aug 17 · lowest so far$591 · Aug 17$502 now$502€449 at Thomann · in stockCheck price ↗ -
Endorphin.es Squawk Dirty To Me Eurorack Synth Module
Squawk Dirty To Me Silver · Endorphin.es
7 for sale on Reverb2 finishes at Thomann
The Squawk Dirty To Me is a fantastic character module for Eurorack. It’s a surprisingly versatile stereo filter with a real edge – perfect for sound design, experimental music, or adding grit to more conventional patches. This is a great option for anyone wanting a unique sonic signature without needing to commit to a full modular system.
Pros
- Exceptional filter character, uniquely aggressive and musical.
- Integrated VCA streamlines patching and sound shaping.
- Meta-CV scanning provides evolving, dynamic filter textures.
Cons
- Limited filter type control compared to a full Grand Terminal.
- 120mA draw can be significant for power-constrained racks.
63AudioFu
Index↓ 2.2%since Aug 17 · lowest so far$200 · Aug 17$196 now$196€175 at Thomann · in stockCheck price ↗ -
The Erica Synths Black is a fantastic, character-rich multimode filter that's a real workhorse. It's a great entry point into more complex filtering, especially if you’re chasing that vintage Moog vibe, and its small size is a huge bonus for Eurorack users. Perfect for sound design, experimental music, and adding warmth to synths.
Pros
- Gorgeous, warm filter character with genuine germanium overdrive tone
- Excellent resonance sweep provides screaming, musical feedback possibilities
- Compact 10HP footprint makes it ideal for dense modular setups
Cons
- The lowpass mode can be a bit muddy with extreme resonance
- Limited filter modes compared to some pricier, more complex options
63AudioFu
IndexStableno change since Aug 17Aug 17$200 now$200€179 at Thomann · in stockCheck price ↗ -
Behringer 904B Voltage Controlled High Pass Filter Eurorack…
904B VC High Pass Filter · Behringer
8 for sale on Reverb1 finish at Thomann
This filter is great if you need a compact, cheap way to cut low frequencies in your rack. You can automate the cutoff with three CV inputs, and the two frequency ranges give you quick options. It works well as a simple tool, but the lack of gain and resonance controls means you won't get deep sound shaping. Perfect for beginners or those who just need to remove bass.
Pros
- Two distinct frequency ranges let you shape tone quickly.
- Compact 8 HP width fits tight modular cases perfectly.
- Three CV inputs let you automate the cutoff smoothly.
Cons
- Single high-pass mode lacks low-pass flexibility for full control.
- No gain or resonance knobs limit shaping the filter voice.
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4MS Spectral Multiband Resonator
Spectral Multiband Resonator · 4ms
12 for sale on Reverb1 finish at Thomann
The Spectral Multiband Resonator is a seriously unique tool for sound design. It’s not a simple filter; it’s a resonant landscape generator perfect for experimental electronic music, ambient soundscapes, and anyone wanting to push the boundaries of modular synthesis. Be prepared to dig in – it's rewarding, but takes some effort to truly master.
Pros
- Exceptional tonal sculpting with six independently tunable bands.
- The scale quantization offers surprisingly musical and predictable results.
- Envelope follower per channel unlocks unique rhythmic and textural possibilities.
Cons
- The 26U width demands significant space in a modular setup.
- Steep learning curve; mastering all controls requires dedication.
62AudioFu
IndexStableno change since Aug 17Aug 17$479 now$479€429 at Thomann · in stockCheck price ↗ -
This Erica Synths Polivoks VCF V2 is a fantastic little module for recreating that gritty, Russian synth vibe. It’s a no-frills design, but it nails the aggressive character of the original Polivoks filter, perfect for industrial, experimental, or anyone craving a raw, analog edge in their modular patch. A great choice for those seeking a specific, iconic sound without a huge commitment.
Pros
- Authentic Polivoks character with original K140UD12 chips
- BP mode delivers aggressive, resonant sweeps and textures
- Compact 10HP footprint ideal for space-constrained modular systems
Cons
- Limited filter modes compared to more versatile options
- Can be quite aggressive and noisy at higher resonance settings
61AudioFu
IndexStableno change since Aug 17Aug 17$221 now$221€198 at Thomann · in stockCheck price ↗
All 86 filter modules
Same index, same nightly prices — compact. Colour options of one model share a row. Tap a photo to zoom.
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Make Noise QPAS ModuleQPAS · Make Noise61Stable$467€418$467€418Check ↗
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Doepfer A-121dDoepfer · 4 finishes60↓ 2.7%$162€145$162€145Check ↗
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Doepfer A-120 VCF1 24dB Low Pass FilterA-120 · Doepfer · 2 finishes59Stable$128€115$128€115Check ↗
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Verbos Electronics Noise & FilterVerbos Electronics57Stable$139€124$139€124Check ↗
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Behringer 121 Dual VCF Eurorack Synthesizer Module121 Dual VCF · Behringer56Stable$47€42$47€42Check ↗
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Joranalogue Audio Design Filter 8Joranalogue Audio Design56Stable$330€295$330€295Check ↗
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Doepfer A-101-1 Vactrol VCFA-101-1 · Doepfer55↓ 4.1%$155€139$155€139Check ↗
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Behringer 1006 FiltAmp 4-Pole VCF / VCA Eurorack ModuleFiltamp Module 1006 · Behringer53Stable$44€39$44€39Check ↗
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Behringer 914 Fixed Filter Bank Eurorack Synthesizer Module914 Fixed Filter Bank · Behringer53Stable$58€52$58€52Check ↗
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Befaco Pony VCF Eurorack Synthesizer ModulePony VCF · Befaco52Stable$207€185$207€185Check ↗
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Doepfer A-124-2Doepfer · 2 finishes51Stable$106€95$106€95Check ↗
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Doepfer A-105-2Doepfer · 2 finishes51Stable$133€119$133€119Check ↗
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Behringer 904A Voltage Controlled Low Pass Filter Eurorack…904A VC Low Pass Filter · Behringer49Stable$31€28$31€28Check ↗
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Behringer WASP Deluxe Desktop SynthesizerWasp VCF · Behringer49Stable$55€49$55€49Check ↗
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BASTL Instruments Cinnamon Voltage Controlled State Variable FilterCinnamon · Bastl Instruments49Stable$196€175$196€175Check ↗
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Doepfer A-121 VCF2 Multimode FilterA-121-2 · Doepfer · 2 finishes48Stable$140€125$140€125Check ↗
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Doepfer A-108 VCF8A-108 · Doepfer48Stable$172€154$172€154Check ↗
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Doepfer A-103 18dB Low Pass FilterDoepfer45Stable$99€89$99€89Check ↗
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Doepfer A-102Doepfer45Stable$99€89$99€89Check ↗
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Doepfer A-121-3Doepfer45Stable$109€98$109€98Check ↗
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Doepfer A-101-2 Vactrol Lowpass GateDoepfer45Stable$111€99$111€99Check ↗
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Doepfer A-123-2Doepfer45Stable$128€115$128€115Check ↗
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Doepfer A-106-1 Xtreme Filter (MS20)Doepfer45Stable$133€119$133€119Check ↗
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Doepfer A-104Doepfer45Stable$155€139$155€139Check ↗
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Doepfer A-106-6 XP FilterDoepfer45Stable$166€149$166€149Check ↗
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Doepfer A-105-4 Quad Poly VCFDoepfer45Stable$245€219$245€219Check ↗
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AJH Synth Gemini 2412 Dual SVF silverAJH Synth · 2 finishes45Stable$513€459$513€459Check ↗
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Tiptop Audio OctopassTiptop Audio44↓ 9.6%$423€379$423€379Check ↗
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Schlappi Engineering 100 GritSchlappi Engineering · 2 finishes43Stable$312€279$312€279Check ↗
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Doepfer A-101-6 Opto VCF Opto FET Filter / PhaserA-101-6 · Doepfer42Stable$115€103$115€103Check ↗
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Behringer SurgesBehringer41Stable$40€36$40€36Check ↗
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Behringer Multi Filter/Resonator 1047Behringer41Stable$53€47$53€47Check ↗
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Behringer SwordsBehringer41Stable$111€99$111€99Check ↗
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Erica Synths Black LPGErica Synths40Stable$207€185$207€185Check ↗
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Erica Synths Black 3109 VCF/VCAErica Synths40Stable$207€185$207€185Check ↗
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Erica Synths Drum Stereo DJ VCFErica Synths40Stable$233€209$233€209Check ↗
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Erica Synths Graphic Resonant FBErica Synths40Stable$412€369$412€369Check ↗
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ADDAC 607 CrossoverADDAC39Stable$128€115$128€115Check ↗
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Tiptop Audio Forbidden Planet Analog FilterTiptop Audio39Stable$154€138$154€138Check ↗
- 50
ADDAC 605 Spectral TiltADDAC39Stable$196€175$196€175Check ↗
Filter Modules by the numbers
Measured across all 98 models we track, not a sample.
Median $200 — half of all filter modules here cost less.
How to choose the best filter modules
Resonance
This isn't just about a howl; it's about how the resonance interacts with the signal, creating movement and character. A good resonance can add subtle warmth or a screaming lead - it's a crucial expressive element.
Filter Slope (dB/Octave)
12dB/octave gives you that classic Moog-style filter with a smooth, gradual breakup. 24dB/octave is more aggressive, capable of some serious self-oscillation and gnarly distortion, but can also be a bit more prone to phase issues if you're not careful.
Drive/Distortion
Many filters offer built-in drive, which can add grit and harmonic richness. The quality of this drive varies wildly - cheap drive often sounds fizzy and harsh, while the good stuff adds sustain and body.
Frequency Range & Response
A wide frequency range gives you more flexibility for shaping sounds. The filter's response - how it tracks with the oscillator's pitch - is key for expressive sweeps and vocal-like sounds.
Stereo Capabilities
If you're working in stereo, a stereo filter can really open up your soundstage. Many modules in this price range are mono, so consider that a potential limitation.
Buying guide
Alright, so you're diving into modular and need a filter, but your bank account isn't screaming 'Eurorack gold.' That's a totally reasonable situation. Getting that Moog-esque warmth or a gnarly bit-crushed edge doesn't have to bankrupt you. I've spent years sifting through modules, and here's the lowdown on the best filter modules you can snag for under $1000 - no hype, just honest opinions.
At this budget, you're going to be making trade-offs. Expect some modules to have a slightly plasticky feel or a less refined circuit design. Really listen for the 'character' - is it a pleasant quirk or a distracting flaw?
Don't chase the absolute 'best' Moog clone; find a filter that inspires your sound and fits your workflow. Paying a little more for a module with a wider frequency range or better drive circuit is often worth it.
How the AudioFu Index works
Five measured signals and nothing else — no stars from strangers, no “tested by experts” we didn’t do. The weights are fixed and public. We don’t play these instruments; we measure the market around them.
This chart covers 98 filter modules from the Thomann catalogue. Before you buy, read hands-on reviews and, where you can, play it. Full methodology.
AudioFu earns a commission when you buy through our Thomann links. It never changes the order — the index does.
- Demand40%
How many of this exact model are for sale on Reverb right now — what musicians actually buy and resell.
- Lineup20%
How many finishes Thomann stocks — makers expand the models that sell.
- Price15%
Where the price has moved since we started tracking in August.
- Specs15%
How completely the maker documents it.
- Maker10%
How deep the brand’s range is in this category.
Questions
What's the difference between a low-pass, high-pass, and band-pass filter?
Low-pass cuts highs, high-pass cuts lows, and band-pass lets a narrow range of frequencies through. Most modules offer a low-pass as a starting point, with options for band-pass or high-pass modes.
Can I use these filters with non-modular synths?
Some can, if they have a CV input for frequency and an audio input/output. But generally, they're designed to be part of a modular system. You'll need a way to control the cutoff frequency with voltage.
What does 'self-oscillation' mean?
It means the filter can generate its own audio signal, even without an input. This happens when the resonance is cranked up high enough and the cutoff frequency is set appropriately. It's a cool effect, but can be noisy if not controlled.
Are there any modules that offer multiple filter types?
Absolutely! Some modules combine a low-pass with a high-pass or band-pass, offering more versatility. Just be aware that compromises are often made to keep the price down - the individual filter types might not be as refined as dedicated modules.
What's the deal with 'ladder filters'?
Ladder filters, popularized by Moog, use a series of resonant peaks to shape the sound. They're known for their characteristic 'fat midrange honk' and smooth saturation when pushed, but can also be a little less precise than other designs.
